Dust cap



A. KGREssE Augs 1926.

DUST CAP Filed August 22, 1922 Fig. L

/J. N me m Ew, MT M m Patented Aug. 3, 1926.

.ADOLPBI XGBESSE, l' 25315,' FRANCE.

DUST CAP.

Application led VAugust 22, 1922, Serial No. 583,010, and in Germany August 29, 1821*.

At present, in order to rotect, for example, roller bearings, chie y in automobile construction, felt-s or such like materials are used, arranged in suitably formed grooves or cages. Closure is obtained by friction of the belt or such like ona revolving metal art.

p The object of my invention is to provide an improved dust cap comprising a system of rigid bales, intended to suppress frictions on parts of the machine itself and combning in a compact unit the elements required to ensure eicient protection of the parts to be shielded against introduction of foreign matters, water, dust, etc.

So as to make my invention more clearly understood, I have 'appended hereto a drawing illustrating, by Way of example, an embodinient thereof and wherein Figure 1 is a section of my device.

Figure 2 is a front view thereof. v

Figure 3 and Figure 4 relate to a modiication.

The device comprises inner and outer rings or cages 1 and 5 of eoncavo-convex sec-. tion disposed in spaced,concentric relation with their concavev faces confronting-each other and, preferably, Each cage carries a set of flat, circular bale plates or disks, as indicated at 4 and?r the two sets interfitting and extending past each other in opposite directions, and being secured to the concave faces of the corresponding cages, in the manner -subsequentlyy explained, by means of the supporting and spacing rings 2 and 3, in the case ofthe aiiies 4, and similar rings 6 in the case of the baiiles 7. The latter have an inner diameter which is slightly greater than the outer diameter of the combined supports and spacers 2 and`3, while the baiiles 4 have an outer diameter which is slightly less than the inner diameter of the combined supports and spacers 6; due tol which construction the baies 7 will terminate shortof the parts 2 and 3, and the bailies 4 will terminate short of the arts 6, the provision of the parts 2, 3 and 6 effecting the disposition of adjacent baiies in laterally-spaced relation, as

' will be understood. i

The spaces just referred to are designed to receive filling material 13 of some character. Preferably, this material consistsof a suitable grease which is caused to penetrate into and to ll said spaces by plungin the two' sets of vbaiiles into a hot bath o the of opposite curvature.V

felt or fiber which are arranged in place` during thecourse oftassembling thev bales and which are leftperfectly free or floating in the spaces referred to. In either case, the filling material, whether semi-plastic or in strip form, will obstruct the passage of dust through the labyrinthine passage lcreated by the baiies and, hence, will prevent it from reaching the ball-bearing to be protected. In assembling. the arts, one 'of the battlesfor instance, the rig t-hand bale 4 in Fig.

1-is fitted at its inner edge with the spacing and supporting rings 2, which, in the embodiment illustrated, are disposed against its opposite faces. The lright-hand baffle 7 is next fitted with its rings 6 and arranged against the first-mentioned parts in such a way that the outer ring 6 extends past the outer edge of the baffle 4, while the inner Iring 2 extends past 'the inner edge of the baie 7, as will be apparent from Fig. 1. The

.next part to be positioned is the middle baille 4 which has previously been fitted with its ring 3, and thereafter the second or lefthand baiile 7 is positioned; the building-up being continued part byl part until all of the bales in both sets have been assembled,A whereupon all of the parts are secured to-y gether by soldering. Finally, the inner 'cage 1 is put in place and secured tothe rings 2 and '3 by' soldering, and the outer cage 5 is arranged against and soldered totherings- 6. The number of bales and rings may obviously vary within wide limits, and the 'f precise order inwhich the soldering operation or operations may take place is immaterial. The rings 2, 3 and 6 may, for example,

be separate from the associated bailes when first positioned, and may be soldered immediatel .after being may e soldered a been completed.

The cage 5, with its'connected baiiles 7 may be secured to the stationary member r 'the building-up has of the ball-bearing, andthe cage 1 and its bales 4 may be secured to the rotating member, and vice versa. In any event,it`

will be'luniderstood that the several parts above specified conjointly form I a single com actfunit of true annular construction, `whic can be readil applied bodily as such directly tothel ballcaring, to be protected and disposed, like a simple washer,

directly sitioned, or all of them against one side l.of the bearing; and that it I can .with equal facility be removed bodily as a unit when necessary or desired. In this respect the device is clearly distinguished from devices of the same general character, as heretofore constructed, which usually had to be applied to, and removed from, the bearing to be protected, element by element, so that much time 'was required for either operation. o

The construction described above' may be somewhat modified and simplified, while still retaining all of the essential features, as will be apparent from Figs. 3 and 4, which show the preferred form of the invention, as actually carried into practice. As indicated in these two figures, the number of baiiles may be reduced and the cages formed at one side with lateral cheeks which overlap in the same way as the lbailies and wh1 ch, therefore, act as such. The cages are 1ndicated therein at 10 andv12; the cheek portions or extensions being located on the inner (left-hand) edge of the inner cage 10 and on the adjacent edge of the outer cage 12, both cages comprising concave-convex body portions which confront each other, as

before. The manner of assembling and con-l necting the described.

I claim as my invention l. A 'dust cap for protecting ball-bearings; consisting of a-single compact annular unit which is adapted to be disposed directly against one face of the bearing to be protected to prevent access of dust thereto, and which is mountable and demountable parts is the same as that already bodilynas aA unit' such unit comprising coordinate outer an inner members having concentric annular body portions of concevoconvex section which are arranged in s aced relation with their `concave faces con ronting each other, combi/ned supportin and spacing rings secured to the concave ace of each member, and a set of flat, circular baffles indivi' said rings are secured at their side edges, the two sets of baliles interfitting and extending =freely past each other in opposite directions. n 2. A dust cap fori protecting ball-bearings, consisting of a single compact annular unit which is adapted to be disposed directly against one face of the bearing to be protected to prevent access of dust thereto, and which is mountable and demountable bodily as a unit; such unit comprising coordinate outer and inner members having concentric, annular body portions, the confronting inner faces of which are spaced from each other, and circular baffle plates secured .o the body portions of said members and extending freely past one another in opposite directions, the outer member having one of its edges extended continuously inward to form a dat, circular cheek, and the inner member having that edge thereof which is adjacent such cheek extended continuousl outward to form a second flat, circular cheeh arranged parallel with and inner face of the rst cheek. In testimony whereof I aiiix my signature.

AnoLPHn Knemissn.

overlapping the dual to each member and to which 

